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Wyświetlanie 1-15 z 48
Tytuł:
Effective management of leakage in drinking water network
Autorzy:
Kiliç, R.
Powiązania:
https://bibliotekanauki.pl/articles/1068554.pdf
Data publikacji:
2016-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.27.nf
Opis:
There has been an increase in water demand due to the very rapid increase of the world population and industrialization in the last 200 years. However, there are limited available water resources in the world. In addition to this, some of the existing water resources have been unusable due to agricultural and industrial pollution. The need for more effective drinking water network operation becomes prominent in order to fulfil the increasing water demand. In this study, it has been aimed to decrease the leakages and prevent water loss by applying pressure management in drinking water distribution network taking the pressure in the distribution system under control.
Źródło:
Acta Physica Polonica A; 2016, 130, 1; 479-483
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of persulfate, peroxide activated persulfate and permanganate oxidation on treatability and biodegradability of leachate nanofiltration concentrate
Autorzy:
Guvenc, Senem Yazici
Varank, Gamze
Demir, Ahmet
Powiązania:
https://bibliotekanauki.pl/articles/2032960.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
COD
nanofiltration
NF
ChZT
nanofiltracja
Opis:
The effects of persulfate (PS), peroxide activated persulfate (P-PS) and permanganate (PM) oxidation processes on leachate nanofiltration (NF) concentrate treatment have been activated. Additionally, COD fractions were determined and compared before and after each oxidation process. The total COD removal efficiencies by the oxidation processes using PS, P-PS, and PM as the oxidants were determined to be 24.5%, 32.9%, and 39.5%, respectively. The biodegradable COD fraction increased from 6.37% to 9.25%, 11.51%, and 13.64% after the PS, P-PS, and PM oxidation processes, respectively. About 25%, 34%, and 46% removal efficiencies of the inert COD content of the concentrate were obtained after the PS, P-PS and PM oxidation processes, and the soluble COD fraction increased from 71.1% to 87.2%, 89.0% and 84.6% by the PS, P-PS and PM oxidation processes, respectively. Although the highest removal efficiencies were achieved by PM oxidation with the lowest operational cost, all of the processes may be suggested as efficient methods for conversion of insoluble COD into the soluble COD fraction and for inert COD removal. The results of the study showed that the PS, P-PS, and PM oxidation processes may be effectively utilized as post-treatment techniques for leachate NF concentrate treatment.
Źródło:
Environment Protection Engineering; 2020, 46, 3; 97-108
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Josephson Network as a Model for Inhomogeneous Superconductor: a Microwave Power Absorption
Autorzy:
Rycerz, A.
Spałek, J.
Powiązania:
https://bibliotekanauki.pl/articles/2047320.pdf
Data publikacji:
2007-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.81.Fa
74.25.Nf
Opis:
We discuss the applied magnetic field dependence of the microwave absorption by a three-dimensional array of up to 30×30 ×30 Josephson junctions with random parameters including the resistivity, capacity, and inductance of each junction. The numerical simulation results for the networks show characteristic microwave absorption anomalies observed in the ceramic samples of high temperature superconductor YBa$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{7-x}$. We also provide a discussion of the absorption in simple analytical terms of the Josephson loop instabilities.
Źródło:
Acta Physica Polonica A; 2007, 111, 4; 581-594
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of Accidental Coincidences in PET
Autorzy:
Oliver, J.
Rafecas, M.
Powiązania:
https://bibliotekanauki.pl/articles/1402605.pdf
Data publikacji:
2015-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.uk
87.57.nf
Opis:
Accidental coincidences are one of the main sources of image degradation in positron emission tomography. It is possible to compensate for their degradation effects, but an accurate method to estimate the randoms rate is required. Two conventional methods are used for random rate estimation: the "singles rate" method and the "delayed window" method. In this work we propose a mathematical model that describes the process of accidental coincidence formation. By using it, we are able to predict the correct number of randoms as well as the estimations provided the singles rate and delayed window methods. The model is used to propose a novel estimation method: the "singles-prompt". The aim of this work is to assess the performance of the singles-prompt method and, specially, the model capabilities at several levels. The results agree with all the predictions of the model. In particular, the singles rate and delayed window estimations behave as described by the model and the singles-prompt method estimates the correct number of randoms regardless of the source distribution and total activities.
Źródło:
Acta Physica Polonica A; 2015, 127, 5; 1449-1452
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved oil production by membranes
Autorzy:
Nair, R. R.
Saltveit, K. J.
Protasova, E.
Bilstad, T.
Powiązania:
https://bibliotekanauki.pl/articles/298791.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
designer water
NF membranes
IOR
seawater
Opis:
The objective of this presentation is to show connections of activities leading to improved oil recovery (IOR) when prospecting for oil and gas. Increased wettability of injected water into the reservoirs is caused by specific ions. Technical limitations for production of designer water from seawater by membrane separation are high-lighted. Desirable characteristics of designer water are low NaCl concentrations and high divalent ion concentrations for improving wettability of Crude Oil, Brine and Rock (CBR). Experimental setup incorporated nanofiltration (NF) membranes for ion separation. Retentate from NF contains the main constituents of Designer Water. A property of NF is to retain divalent ions. Performance of the membranes was evaluated in terms of flux and rejection under varying feed compositions, pressures and recovery rates. The research comprised a technical-economical study for salt separation. Results were evaluated in terms of desalination efficiencies and energy requirements. A sensitivity test, spiking Na2SO4 in the feed seawater, showed a decrease in retention of Cl with increasing SO42- concentrations. A reduced permeate flux resulted, however, with increasing Na2SO4 concentrations.
Źródło:
AGH Drilling, Oil, Gas; 2015, 32, 1; 221-232
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of nuclear factor-κB in the development of autoimmune diseases: a link between genes and environment
Autorzy:
Kuryłowicz, Alina
Nauman, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/1040661.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
autoimmune diseases
nuclear factor-κB (NF-κB)
genetic polymorphism
NF-κB targeted strategies
Opis:
Although autoimmune diseases are relatively common, mechanisms that lead to their development remain largely unknown. Nuclear factor-κB (NF-κB), as a key transcription factor involved in the regulation of immune responses and apoptosis, appears to be a good candidate for studies on the pathogenesis of autoimmunity. This review presents how perturbations of the NF-κB signaling pathway may contribute to self-tolerance failure, initiation of autoimmune inflammatory response as well as its persistent maintenance and therefore to the development of common autoimmune diseases including rheumatoid arthritis, multiple sclerosis, type 1 diabetes mellitus, thyroid autoimmune diseases, systemic lupus erythematosus as well as inflammatory bowel diseases and psoriasis. A special emphasis is put on the genetic variations in the NF-κB related genes and their possible association with susceptibility to autoimmune diseases, as well as on the therapeutic potential of the NF-κB targeted strategies in the treatment of autoimmunity.
Źródło:
Acta Biochimica Polonica; 2008, 55, 4; 629-647
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected aspects of designing and realization of low energy single-family houses according to the NF15 AND NF40 standards
Autorzy:
Deja, B. M.
Tyburski, J.
Powiązania:
https://bibliotekanauki.pl/articles/297917.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
design
realization
single-family house
NF40
NF15
energy standard
low energy building
passive building
Opis:
The article presents chosen aspects of designing and realization of low energy single-family houses fulfilling the requirements of the NF40 and NF15 standards as determined in the priority program of the National Fund for Environmental Protection and Water Management entitled „An improvement of energy effectiveness. Subsidies to low energy houses”. An analysis concerns the minimal technical requirements pertaining to the outside shape and internal structure of NF40 and NF15 buildings, in comparison with the building law recommendation on technical conditions to meet by buildings and their location. An attention was paid to chosen problems of fulfilling the requirements of the NF40 and NF15 standards and the need of applying modern structural and material solutions and to especially accurate realization.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(2); 103-114
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of Wave Energy Converter System with Linear Generator
Autorzy:
Şahin, M.
Özdinç, I.
Powiązania:
https://bibliotekanauki.pl/articles/1401997.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
88.60.nf
07.10.-h
Opis:
It is not wrong to say that wave energy will be one of the most important energy sources to be used in the future, when it is thought that three-quarters of the world is covered by water. The initial investment and maintenance costs are the only expenses, beside not any price have to be paid for the primary energy. The wave energy does not leave any contaminants, as well as it is cheap, clean, environmentally, friendly and a great energy sources. In this study, wave energy converter system which has a four poles linear generator is discussed. The Linear generator model has been designed and created as a portable model. The results obtained from this model were examined.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-243-B-245
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GPU Accelerated Image Reconstruction in a Two-Strip J-PET Tomograph
Autorzy:
Białas, P.
Kowal, J.
Strzelecki, A.
Bednarski, T.
Czerwiński, E.
Gajos, A.
Kamińska, D.
Kapłon, Ł.
Kochanowski, A.
Korcyl, G.
Kowalski, P.
Kozik, T.
Krzemień, W.
Kubicz, E.
Moskal, P.
Niedźwiecki, Sz.
Pałka, M.
Raczyński, L.
Rudy, Z.
Rundel, O.
Salabura, P.
Sharma, N.
Silarski, M.
Słomski, A.
Smyrski, J.
Wieczorek, A.
Wiślicki, W.
Zieliński, M.
Zoń, N.
Powiązania:
https://bibliotekanauki.pl/articles/1402623.pdf
Data publikacji:
2015-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.nf
87.57.uk
Opis:
We present a fast GPU implementation of the image reconstruction routine, for a novel two strip PET detector that relies solely on the time of flight measurements.
Źródło:
Acta Physica Polonica A; 2015, 127, 5; 1500-1504
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dioscin improves survival in murine endotoxemia induced by Lipopolysaccharide
Autorzy:
Bing, Han
Jing, Lu
Meitong, Liu
Zhe, Feng
shuang, Guan
Powiązania:
https://bibliotekanauki.pl/articles/895519.pdf
Data publikacji:
2018-12-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
cytokines
survival
Endotoxemia
Dioscin
NF- қB
Opis:
Dioscin is a natural steroidal saponin mainly exacted from Dioscoreae Rhizoma, which usually used as traditional medicine in east asia area. Dioscin has various pharmacological actions. However, little is known concerning the role on Lipopolysaccharide (LPS)-induced endotoxemia. The aim of the present study was to investigate the effects and possible mechanisms of dioscin against LPS-induced endotoxemia in mice. The data showed dioscin significantly increased mouse survival when mice were treated with dioscin prior to or after LPS challenge and significantly attenuated TNF-α, IL-1β and IL-6 production in serum. Further studies revealed that dioscin could downregulate LPS-induced nuclear transcription factor - қB (NF-қB) signal transduction pathways. These observations indicated that dioscin modulated early cytokine responses by blocking NF-қB activation, and thus, increased mouse survival in murine endotoxemia induced by LPS.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1347-1352
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ lokalizacji budynku NF15 na roczne koszty zasilania w ciepło z OZE
THE IMPACT OF BUILDING LOCATION IN NF15 STANDARD ON ANNUAL COST OF SOLUTIONS BASED ON RENEWABLE ENERGY
Autorzy:
Kulawinek, Kamila
Jadwiszczak, Piotr
Powiązania:
https://bibliotekanauki.pl/chapters/2231655.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
standard NF15
odnawialne źródła energii
OZE
Opis:
W artykule określono zmienność kosztów zasilania w ciepło z odnawialnych źródeł energii (OZE) budynku wzniesionego w standardzie energetycznym NF15 w zależności od jego lokalizacji na terenie Polski. W kroku godzinowym przeanalizowano roczne koszty zasilania budynku w ciepło z systemów OZE wykorzystujących kolektory słoneczne, pompy ciepła typu powietrze/woda i bufory ciepła oraz porównano z systemem konwencjonalnym z kondensacyjnym kotłem gazowym.
The article sets out the volatility of energy costs in the heat of Renewable Energy Sources (RES), a building built in NF15 energy standard depending on its location on Polish territory. Analyzed the annual power supply costs of the building in the heat of renewable energy systems using solar panels, heat pumps and heat buffers, and compared with a conventional system with a condensing gas boiler in hourly step.
Źródło:
Interdyscyplinarne zagadnienia w inżynierii i ochronie środowiska 6; 192-202
9788374938976
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
COEXISTENCE OF AUTISM WITH NEUROFIBROMATOSIS TYPE 1
Autorzy:
Harchaoui, Hakim
Samih, Majda
Touhami Ahami, Ahmed Omar
Powiązania:
https://bibliotekanauki.pl/articles/2137970.pdf
Data publikacji:
2021-02-23
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
autism
neuroanatomy
genetic diseases
neurofibromatosis NF1
Opis:
Autism is a developmental disorder that usually appears during the first three years of childhood. It results from a nervous system disorder, which affects brain functions. Neurofibromatosis 1 (NF 1) is a group of genetic diseases that mainly affect the growth of neural tissue cells. This alteration is also known as von Recklinghausen’s disease. The objective of this study is to highlight a case of this neurocutaneous alteration (NF 1) which was associated with autism spectrum disorders at the age of eight years. The data for this study are extracted from the medical file of a 12-year-old boy with confirmed autism who has been taken care of by the “Applied Behavioral Analysis” (ABA) center in Morocco since the age of three. At the age of eight, the appearance of numerous café-au-lait spots on his body led the center to conduct neuroradiological investigations (T1, T2 and Flair). The examinations had revealed T2 hyper intensity signals involving several unidentified bright objects (UBO) and the globus pallidus was the most affected area. With ASD alone, the child faces various disorders of the nervous system and many difficulties in his socio- communicative life. The onset of NF1 gave rise to additional complications. ------------------------------------------------------------------------------------------------------------------------------------
Źródło:
Acta Neuropsychologica; 2021, 19(1); 121-126
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TNFα-induced activation of NFκB protects against UV-induced apoptosis specifically in p53-proficient cells
Autorzy:
Szołtysek, Katarzyna
Pietranek, Katarzyna
Kalinowska-Herok, Magdalena
Pietrowska, Monika
Kimmel, Marek
Widłak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1040680.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
signaling
NF-κB
apoptosis
cytoprotection
TP53
Opis:
The signaling pathways that depend on p53 or NFκB transcription factors are essential components of cellular responses to stress. In general, p53 is involved in either activation of cell cycle arrest or induction of apoptosis, while NFκB exerts mostly anti-apoptotic functions; both regulatory pathways apparently interfere with each other. Here we aimed to analyze the effects of NFκB activation on DNA damage-induced apoptosis, either p53-dependent or p53-independent, in a set of human cell lines. Four cell lines, HCT116 and RKO colon carcinoma, NCI-H1299 lung carcinoma and HL60 myeloblastoma, each of them in two congenic variants either containing or lacking transcriptionally competent p53, were used. Cells were incubated with TNFα cytokine to activate NFκB and then treated with ultraviolet or ionizing radiation to induce apoptosis, which was assessed by measurement of the sub-G1 cell fraction. We observed that treatment with TNFα resulted in a significant reduction in the frequency of apoptotic cells in UV-irradiated p53-proficient lines (with exception of the UV-resistant NCI-H1299 cells). This anti-apoptotic effect was lost when cells were pretreated with parthenolide, an inhibitor of NFκB activation. In marked contrast, TNFα-pretreatment of p53-deficient lines resulted in an increased frequency of apoptotic cells after UV irradiation (with exception of HL60 cells). Such anti- and pro-apoptotic influence of TNFα was less obvious in cells treated with ionizing radiation. The data clearly indicates functional interference of both signaling pathways upon the damage-induced apoptotic response, yet the observed effects are both cell type- and stimulus-specific.
Źródło:
Acta Biochimica Polonica; 2008, 55, 4; 741-748
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Setra S 415 NF : "International Bus of the Year 2009"
Autorzy:
Rusak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/315892.pdf
Data publikacji:
2008
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
Setra S 415 NF
autobus niskopodłogowy
autobus miejski
Opis:
Do współzawodnictwa o tytuł "International Bus of The Year 2009" przystąpiły: niskopodłogowe Setra i MAN Lion's City z napędem wodorowym oraz niskowejściowy midibus Optare Versa. Test przeprowadzono na ulicach Berlina. Rywalizację wygrała Setra S 415 NF. W artykule opisano nagrodzony model, jego nadwozie, wnętrze i układ jezdny, zamieszczono również dane techniczne pojazdu.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2008, 9, 7-8; 14-20
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NOD1 and NOD2 receptors: integral members of the innate and adaptive immunity system
Autorzy:
Antosz, Halina
Osiak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1039530.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
NOD1
NOD2
CARD
NF-κB
Opis:
NOD-like proteins (NLR) are a specialized group of intracellular receptors, which constitute an essential component of the host innate immune system. They were discovered more than a decade ago, but research on this particular class of microbial detectors is still ongoing to allow for a better understanding of the mechanisms, recognition of microorganisms, transmission of signals, and carrying out the activation of inflammatory signaling pathways. In this review, we discuss the construction of NOD1 and NOD2 receptors, their functions, and significance in the pathogenesis of inflammatory diseases in humans.
Źródło:
Acta Biochimica Polonica; 2013, 60, 3; 351-360
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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